Jawaban:
A.
3y+102=180
3y. =180-102
3y. =78
y. =78/3
y. =26
b
4x+58+3x+73=180
4x + 3y + 58 + 73 = 180
7y + 131 = 180
7y = 180 - 131
7y = 49
y = 49/7
y= 7
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Jawaban:
A.
3y+102=180
3y. =180-102
3y. =78
y. =78/3
y. =26
b
4x+58+3x+73=180
4x + 3y + 58 + 73 = 180
7y + 131 = 180
7y = 180 - 131
7y = 49
y = 49/7
y= 7